Nanotechnology has provided endless tools to improve detection systems in the most diverse fields of science. One of those tools is the development of surface enhanced Raman spectroscopy (SERS) that promotes the amplification in 8-10 orders of magnitude of the Raman signals obtained by conventional methods. However, the success of this analytical technique depends on many factors such as the core material of the nanoparticles, their morphology and the adsorption pattern of the analytes on the metal surface, aspects that are not always considered when designing this type of sensors. This work has focus on the effect of these features using a reference molecule such as methylene blue (MB) and two coffee metabolites, trigonelline and chlorogenic acids (CGAs), known as potential quality markers of this agricultural product so important in Peru. Herein, we reported higher Raman signals when u...

Nanotechnology has provided endless tools to improve detection systems in the most diverse fields of science. One of those tools is the development of surface enhanced Raman spectroscopy (SERS) that promotes the amplification in 8-10 orders of magnitude of the Raman signals obtained by conventional methods. However, the success of this analytical technique depends on many factors such as the core material of the nanoparticles, their morphology and the adsorption pattern of the analytes on the metal surface, aspects that are not always considered when designing this type of sensors. This work has focus on the effect of these features using a reference molecule such as methylene blue (MB) and two coffee metabolites, trigonelline and chlorogenic acids (CGAs), known as potential quality markers of this agricultural product so important in Peru. Herein, we reported higher Raman signals when u...